[seynt mahr-tn, -tin; French san mar-tan] /ˌseɪnt ˈmɑr tn, -tɪn; French sɛ̃ marˈtɛ̃/
an island in the N Leeward Islands, in the E West Indies, divided in two parts: the N section is a dependency of Guadeloupe, 20 sq. mi. (52 sq. km); the S section is an administrative part of the Netherlands Antilles, 17 sq. mi. (44 sq. km).